Sometimes when you want to update your Ubuntu you see this:

Not enough free disk space

Please free […] disk space on /boot

 

Not free disk space on boot

It means that you have old kernels on your /boot partition. You should clean system and delete old kernels. Maybe not every old kernel but some of them. I usually have two or three kernels. I never have only the newest kernel because it is possible to get problems when you have just one kernel (for instance last time I had a problem to run VirtualBox machine and I came back to the older kernel).

So let’s go! As Julian Higman wrote on his blog you should paste this command in your terminal:

Now you deleted old kernels and you can update your system. Warning! You have only current kernel. Consider my words above (about two kernels).

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